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struct Foo
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{
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Foo() {}
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virtual ~Foo() {}
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virtual int test() const = 0;
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};
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struct Bar : Foo
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{
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Bar() {}
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~Bar() override {}
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int test() const override { return 0; }
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};
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int test(Foo const& foo)
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{
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return foo.test();
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}
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int main()
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{
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Bar const bar;
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return test(bar);
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}
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